Shoemaking apparatus



April 2, 1929. H.' M. coLDlTz SHE MAKING' APPARATUS Filed June 8, 1927f... Wp (filo lfzew.

Patented Apr. 2, 1929.

UNITED STATES o 1,707,510 PATENT. oFFlcE.

HEINRICH MAXCOIiDITZ, I DRESDEN, GERMANY.

. l SHOEUAKING APPARATUS.

1 Application mea June is,

and durable cement, such for examplefas a/ solution of celluloid or thelike and the maintenance of intimate contact between the parts to beconnected for a period suicient to permit the cement to set thoroughly.This process is highly advantageous in repairing shoes byl reason of itsease and simplicity,l but repair work is commonly done in the home or inrelatively 'small cobbling shops and as most of the presses at presentavailable are complicated and expensive, this process 'of repair hasnotXbeen adopted as widely as could be desired. Accordingly the presentinvention has for lits object the provision of a press capable ofapplying the desired degree of pressure for attaching the sole to ashoe, in accordance with the above described process, and whicha issimple in construction and mode of operationand which can be sold at areasonable price.

With the above objectinl view I have devised a process embodying thefeatures disclosed by way of example in the accompanying drawings inwhich,

Fig, 1 is a plan view of the frame and bed plate of the press, omitting4the resilient pad and the pressurel applying yoke;

Fig. 2 is a fragmentary side elevation of the press, showing the yoke inoperative position and indicating a shoein broken lines;

` Fig. 3'. is a fragmentary vertical section d substantially o'n theline 3-3 of Fig. 1, show- 40 ing the yoke in operative position; and

l, Fig. 4 is a vertical section substantially on the line 4--4 of Fig.2.

Referring to the drawings the press coim-l prises a frame 1 which mayconveniently. made of cast iron or steel and'which is pref-v erablyprovided with an upstanding peripheral rim 2 encircling a cavity 3adapted to receive the forepart of the shoe which is to be provided witha sole. Within this cavity I arrange a bed plate upon which .the shoe issupported during the sole-applying operation. This bed plate comprises acentra part 4, preferably integral with the frame, and having the uppersurface 4a. To the front and rear of this central part 4, the bed plateof the frame is provided with webs 5 1927. seria1N.197,5o4..

'and 6 (Fig. 3) connecting the part 4 with the ends ofthe frame.` Theparts 5 and 6 are preferably disposed somewhat below the part 4 andat'their outer ends are furnished with bosses or thickened portionsprovided' with screw-threaded openings for reception of the adjustingscrews 7 and 8. The rear en d of the frame may if desired be providedwith a transverse leg or legs 1a and as here illustrated the forward endofthe'frame is supported upon the lower end of the adjust- `ing screw 7.I contemplate however that aleg or legs similar to the leg 1a may beprolvided at the forward end of the frame if desired.

The bed plate also comprises a movable front part 9 and a movable rearpart 10. The parts 9 and 10 are preferably hinged to the central part 4by means of hinge members l1 and 12. These hinge members mayconveniently consist of strips of leather or the like, or if desired theparts 9 and 10 may Abe united to the frame by means of metallic hinges,pivots or equivalent devices. The parts 9 and 10 may be of metal,wood'or any suitable material having the necessary rigidity and strengthand as here shown the rear member 10=is preferably angular so that itsrear portion inclines upwardly with respect to its forward portion. The`parts 9 and 10 rest upon the adjusting screws 7 and 8 respectively andby turning these screwsthe inclination of the parts 9 and 10 withrespect to the central part ofthe bed plate may be varied independentlyof one another so as to v accommodate the bed plate to shoes of dierentsizes and longitudinal curvature. Under, all ordinary circumstances thebed plate is concave in a front to rear direction by reason of theinclination of the parts 9 and 10 relating to the ,central part 4. It isalso concave transversely, the central part 4 of the bed .plate-beingtransversely concave, as shown in be Fig. 4, and the parts 9 and 10 alsobeing concave in this direction if desired,

The bed plate comprising the central part 4 and the movable end parts 9and 10 preferably supports a thick resilient pad 14 comprising one ormore layers of rubber or other suitable material adapted .toconformnclosely to the under surfacelo't the shoe sole. This 1 pad may,if desired, have a molded upper surface and be provided with upstandinghumps or projections 15 at its rear part adapted to engage the shankportion of the shoe.

The frame 1 is provided with downwardly directed anges 16 and 17 in itsopposite sides in the region of the fixed bed plate member 4 and theseflanges are furnished with elongate substantially horizontal channels 18and 19 in their outer surfaces respectively.. The upper walls of thesechannelsl are preferably inclined inwardly and upwardly so as to pro-'duce overhanging beveled ribs or flanges 20' and 21 respectively. Thelower walls of these guide channels may conveniently be .formed byattaching plates 22 and 23 to the lower edges of the flanges 16 and 17.

The press also comprises a yoke 24 having spaced depending legs 25 and26 which straddle the frame and bed plate. The leg 25 is l. provided at.its lower end with an inwardly directed lug 27 engaging the channel 18while the leg 26 1s provided with `an inwardly di- 28 at its lower endengaging the 4the lower wall of the corresponding guidegroove. The uppersurface of each lug is y likewise of arcuate curvature, preferably ofgreater radius than the lower surface 29, and 1s beveled as indicated at30 to fit snugly against the beveled upper wall of the correspondingchannel. The lugs 27 and 28 are free to move longitudinally of theirrespective channels and may also rock or swingJ within the channels.

The upper or central part of the yoke 24 is provided with ascrew-threaded bore for the reception of a pressure-applying screw 31having a handle 32 and a pressure-applying -pad 33 at its lower end,such pad preferably emg swixueled as indicatedy at 34 to the In usingthis press a last is first inserted in the shoe, and the shoe indicatedat 35, the sole 36 cemented thereto by means of suitable cement, is setdown .upon the bed plateV of the press and the ends 9 and 10 areadjusted in accordance with the size and curvature of the shoe until thepad of the bed plate conyforms closely to the shoe sole. It isunderstood7 of course that before placing the shoe upon the bed platethe screw 31 will have been retraced to provide sufficient space betweenthe pad 33 for the introduction of the shoe. The entire yoke 24 is nowmoved endwise, the lugs 27 and 28 sliding in their respective guidegrooves until the pad 33 is positioned at-the proper point to engage theforepart of the shoe upper. The yoke may now be rocked so as to causethe axis ofthe screw 31 to assume the desired direction and the screw 31is then turned by means ofthe handle 33 to apply pressure to the shoe.'The tendency of the yoke to shift during the application of thispressure when the pressure is other than vertical, is substantiallyovercomeA by the action ofwedge-like surfaces 30 of the lugs 27 and 28engaging the inclined upper walls of the guide channels.

The shoe is allowed to remain under pressure in the press until thecement has..thor oughly set, whereupon the screw 3l is retractedsuiliciently topermit removal of the shoe.

While I h'ave shown one desirable embodiment of the invention herein Iywish it to be' understood that-I am not to be restricted to the-specificdetails of construction herein'illustrated or to materials abovereferred to as desirable for making the several parts or to the exactdimensions or relative proportions of parts herein referred to except asdefined by the claims.

I claim: j

1. A sole cementing press having a frame, a bed plate carriedthereby,said frame having guide channels at its opposite sides, a yoke havingspaced legs, a lug carried by each leg, said lugs engaging and beingmovable longitudinally of the respective guide channels, and a pressuredevice carried by the yoke, the

yoke being-free to swing about a transverse` axis defined by the lugs.

2. A sole cementing press having a frame, a bed plate carried thereby,said frame having elongate guide channels at its opposite sides, a yokehaving spaced legs straddling the frame, a lug providedwith an arcuateperipheral surface projectlng inwardly from each leg of the yoke intothe adjacent guide channel, said lugsl providing rockers about which theyoke may swing, and a pressureapplying screw carried by the yoke.

3. A sole cementing press having a frame,

a bed plate carried thereby, said frame hav-` ing elongateguide channelsat its opposite sides, the upper walls of said channels being inwardlyand upwardly inclined, and a yoke having legs straddling the bed plate,each leg having an'inwardly projecting lug adjacent to its lower end,said lugs projecting into the adjacent guide channels and having beveledupper surfaces engaging the inclined upper walls of the respectivechannels.

4. A sole cementing press having a frame, a bed plate carriedthei'eby,said. frame having elongate guide channels at its opposite sides, the.upper walls of said channels being 4inwardly and upwardly inclined, anda yoke having legs straddling the bed plate, each leg having aprojecting lug -adjacent its, lower end, said lugs projecting into theadjacent guide channels, each lug havingtan arcuate upper surfacebeveled to fit against the inclined upper wall of its respective grooveand forming rockers about which the yoke'may swing, and apressure-applying device carried by the yoke. Y i

5. A sole cementing press having a frame', a bed plate carried thereby,said frame having elongate-guide grooves at its opposite sides, thegrooves having upper and lower walls, and a yoke straddling the frame,said yoke having lugs projecting inwardly into the respective grooves,each lug having arcuate upper and lower surfaces engaging the upper andlower walls respectively of the groove, said lugs being movablelongitudinally of the grooves, and a pressure-applying device carried bythe yoke.

6. A shoe sole cementing press comprising a frame and a bed platecarried thereby, the bed plate being concave both transversely and fromthe front to rear, said bed plate comprising a fixed central part andmovable front and rear parts, independent adjusting screws for.adjusting front and rear parts relatively to the central part, one atleast of said screws forming a supporting lug for the frame, the framehaving guide channels at its opposite sides, a

pressure applying yoke having spaced legs straddling the frame, each leghaving u. lug projecting into the adjacent channel oi' the frame, thelugs being free toslide in the channels and constituting rockers aboutwhich the yoke can swing, and a pressure applying screw carred by theyoke, said screw supporting a pad for engagement with the fore part of ashoe resting on the bed plate.

Signed by me at Dresden, Germany, tenth day of May, 1927.

HEINRICH MAX 'coLDrra this

